Has anyone dyno'd their car with the silencer on and off to see if power gains were affected?
7521
It will. You will lose power. It restricts airflow, thus lowering noise with baffling. Less air, less power. Why you adid a larher free flowing exhaust? More air more power. Hope this helps.
2056195
My engine was making several noises and immediately settled down after I put the stuff in. Does it work,... It seems so, but i have not performed any compression tests or other tests before and after treatment.
518411
Yeah I have mine on my 07 cobalt ls. It sounds really good, but if you take the silencer out it sounds like every other rice burner. But yes, very nice sounding muffler. There's vids on YouTube, before and afters, that's what made me buy it. I got that and a k&n short ram intake and my Slow 140hp 2.2 4cylinder sounds like a freakin beast. Everyone alwaaaays asks if it's an ss. Oh and it even improved the torque a little bit. Just enough to notice. But I highly recommend you get a k&n typhoon intake, gives it a great sound at high rpm and gives about 5 more horsepower and quite a bit of torque.
1954146
In the state (Washington) I am in with the silencer on I am having no problems with the cops. My old muffler was way to loud and I kept getting pulled over and told I had to make it quieter. I would not recommend taking the silencer out of the n1 though as it did seem to be loud without it.
2241063
I haven't install yet to my Toyota Prado it is progress due to much work. But i tried it once by connecting it direct to the battery i was surpriesed i thought it would be loude. Mr. Rupp is correct about the draw, it is taken directly from manufactor datasheet.
97440
It makes very little noise on my stock wrx. You can hear it with the radio off but you have to be somewhat listening for it.
1429857
I got better throttle response but didn't do any dyno tests or anything to actually get quantifiable data. You should hear a difference and notice a "seat of the pants" improvement in acceleration. If I get another z71 then I will definitely buy one of these again.
881475
Keep your foot out of it and don't make that sound. I drive as if it's not there unless I need the power and I gained 2-3 mpg over stock
731078
Does not make a noticeable difference in noise but will help with MPG and some HP increase. I use K&N in all my vehicles:)
263964
I dont believe it does. My car turns all power off to it when I turn the ignition off so has never been an issue for me.
2130299
The silencer does work, it does narrow down the sound with it. It doesn't get annoyingly loud with the silencer but it does sound as if the silencer is moving. Honestly, I would take it of but it's your option. I noticed the difference the moment I took it of from the outside and inside of my car.
1841913
I did not see any H.P change. You can do it you self but I went to a muffler shop.
97433
On my resonator-less 2005 Subaru legacy gt wagon it makes a muffled dumping sound which is more pronounced than stock. Most of the time I don't really notice it. If you have an aftermarket intake you will notice it more than if you have the stock intake with all the resonator pieces in place.
1743324
Doesn't make noise removed from my car it didn't do what it said on description save gas and more horsepower it's b s
1246071
I don't remember there being anything unplugged or left off. I have a 02 Dyna, carbureted. It was pretty straight forward install.
2130298
The silencer is pretty good once you're on the move however on startup the silencer is pretty much useless... The car won't get to the annoyingly 1 mile away loud, but you'll actually get a nice deep growling noise that sounds similar to a WRX STi performance exhaust in tone but not as loud...
1753622
Any shop with an all-wheel-drive dyno should be able to let you do a before-and-after run, but it will be costly ($150-300+, depending on the shop, not including installing the header). With that in mind, I doubt that anyone has done this with the EJ22- the power difference is probably a horsepower or two average, with some minor torque loss down low, as with any performance exhaust install on a small NA engine (due to reduced exhaust back-pressure). The butt dyno will probably tell you that you've gained some power, and you should see a slight improvement in power, as well as fuel economy, but not enough to justify dynoing the car back-to-back. The nice boxer rumble is also brought out more, which is also nice. Either way, if you have an EJ22, you should enjoy its reliability- don't ruin it looking for power that isn't there- Mark W.